SanDisk iXpand Base for iPhone
This backup beast comes with 64, 128, or 256GB of storage and charges your iPhone while plugged in. The Sandisk iXpand 256GB Base is the best value of the 3 sizes, costing about 42¢/GB. With all of the extra storage and 15 watts of fast-charging power, you can keep your iPhone topped off, your iCloud clean and your photos & videos secure from hackers.
The best use we’ve found is for backing up all of the audio recordings from class or meetings. Plus, you can easily share or backup your audio notes with other friends, classmates, and co-workers with the convenient SD card slot.
The rubber top acts as a safe and scratch-free spot for your iPhone to rest while plugged in and backing up. Also, the durable exterior and compact size makes it easy to slip into your backpack, laptop bag, or briefcase for safe keeping.